diff --git a/fhem/www/frontend/www/frontend/index.html b/fhem/www/frontend/www/frontend/index.html
index a260196ef..3a4192d2e 100644
--- a/fhem/www/frontend/www/frontend/index.html
+++ b/fhem/www/frontend/www/frontend/index.html
@@ -20,7 +20,7 @@
     </p>
     
     <link rel="stylesheet" type="text/css" href="lib/ext-4.2.0.663/ext-theme-gray-all.css" />
-    <script type="text/javascript" src="lib/ext-4.2.0.663/ext-all-debug.js"></script>
+    <script type="text/javascript" src="lib/ext-4.2.0.663/ext-all.js"></script>
     <script type="text/javascript" src="lib/jquery/jquery.min.js"></script>
     <script type="text/javascript" src="lib/highcharts/highcharts.src.js"></script>
     <script type="text/javascript" src="app/userconfig.js"></script>